US3374209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosettable compositions containing polyanhydride and mono-oxirane compounds and process of making
Assignee: Gulf Research and Development Co
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Filing: 1964-12-22
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Granted: 1968-03-19
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Expires: 1984-12-22
Abstract
No abstract record available.
Inventors
- 👤 Russell G Hay
- 👤 Stanley M Hazen
- 👤 William J Heilman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:59
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/56; C08G63/58; C08F; C08F22/00; C08F22/04; C08F8/00; C08F8/14; C08G63/40; C08G63/42; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08F2800/00; C08F2800/10; C08F2800/20; C08F2810/00; C08F2810/20; C08F2810/50; C08G63/78; C08G63/82; C08G63/87
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A NEW COMPOSITION CAPABLE OF BEING THERMOSET TO A SOLID INFUSIBLE RESIN HAVING A NETWORK OF ESTER AND ETHER LINKAGES, SAID ESTER LINKAGES BEING FORMED THROUGH THE INTERACTION OF ANHYDRIDE AND EPOXIDE GROUPS AND SAID ETHER LINKAGES BEING FORMED THROUGH THE INTERACTION OF EPOXIDE GROUPS, SAID COMPOSITION CONSISTING ESSENTIALLY OF A LIQUID SOLUTION AT ROOM TEMPERATURE OF A MIXTUE OF A SOLID COMPOUND CONTAINING AT LEAST TWO SUCCINIC ANHYDRIDE GROUPS IN WHICH THE CARBON ATOMS ALPHA TO THE CARBONYL GROUPS N THE SUCCINIC ANHYDRIDE GROUPS ARE CONNECTED TO EACH OTHER THROUGH A SINGLE BOND AND A LIQUID MONOOXIRANE COMPOUND CONTAINING AS ITS ONLY FUNCTIONAL GROUP A SINGLE OXIRANE OXYGEN ATOM, AND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
115 words
A NEW COMPOSITION CAPABLE OF BEING THERMOSET TO A SOLID INFUSIBLE RESIN HAVING A NETWORK OF ESTER AND ETHER LINKAGES, SAID ESTER LINKAGES BEING FORMED THROUGH THE INTERACTION OF ANHYDRIDE AND EPOXIDE GROUPS AND SAID ETHER LINKAGES BEING FORMED THROUGH THE INTERACTION OF EPOXIDE GROUPS, SAID COMPOSITION CONSISTING ESSENTIALLY OF A LIQUID SOLUTION AT ROOM TEMPERATURE OF A MIXTUE OF A SOLID COMPOUND CONTAINING AT LEAST TWO SUCCINIC ANHYDRIDE GROUPS IN WHICH THE CARBON ATOMS ALPHA TO THE CARBONYL GROUPS N THE SUCCINIC ANHYDRIDE GROUPS ARE CONNECTED TO EACH OTHER THROUGH A SINGLE BOND AND A LIQUID MONOOXIRANE COMPOUND CONTAINING AS ITS ONLY FUNCTIONAL GROUP A SINGLE OXIRANE OXYGEN ATOM, AND HAVING THE GENERAL FORMULA:
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |